Separate CommandReader impl from CommandReaderThread

tests/phpstan/configs/actual-problems.neon

@@ -6,7 +6,7 @@ parameters:
 			path: ../../../src/CrashDump.php
 
 		-
-			message: "#^Instanceof between pocketmine\\\\command\\\\CommandReader and pocketmine\\\\command\\\\CommandReader will always evaluate to true\\.$#"
+			message: "#^Instanceof between pocketmine\\\\command\\\\CommandReaderThread and pocketmine\\\\command\\\\CommandReaderThread will always evaluate to true\\.$#"
 			count: 1
 			path: ../../../src/Server.php
 

tests/phpstan/configs/check-explicit-mixed-baseline.neon

@@ -37,7 +37,7 @@ parameters:
 
 		-
 			message: "#^Cannot cast mixed to string\\.$#"
-			count: 1
+			count: 2
 			path: ../../../src/Server.php
 
 		-
@@ -80,11 +80,6 @@ parameters:
 			count: 2
 			path: ../../../src/VersionInfo.php
 
-		-
-			message: "#^Cannot cast mixed to string\\.$#"
-			count: 1
-			path: ../../../src/command/CommandReader.php
-
 		-
 			message: "#^Part \\$host \\(mixed\\) of encapsed string cannot be cast to string\\.$#"
 			count: 1

tests/phpstan/configs/l7-baseline.neon

@@ -436,17 +436,7 @@ parameters:
 			path: ../../../src/block/tile/TileFactory.php
 
 		-
-			message: "#^Cannot access offset 'mode' on array\\(0 \\=\\> int, 1 \\=\\> int, 2 \\=\\> int, 3 \\=\\> int, 4 \\=\\> int, 5 \\=\\> int, 6 \\=\\> int, 7 \\=\\> int, \\.\\.\\.\\)\\|false\\.$#"
-			count: 1
-			path: ../../../src/command/CommandReader.php
-
-		-
-			message: "#^Parameter \\#1 \\$stream of method pocketmine\\\\command\\\\CommandReader\\:\\:isPipe\\(\\) expects resource, resource\\|false given\\.$#"
-			count: 1
-			path: ../../../src/command/CommandReader.php
-
-		-
-			message: "#^Static property pocketmine\\\\command\\\\CommandReader\\:\\:\\$stdin \\(resource\\) does not accept resource\\|false\\.$#"
+			message: "#^Property pocketmine\\\\command\\\\CommandReader\\:\\:\\$stdin \\(resource\\) does not accept resource\\|false\\.$#"
 			count: 1
 			path: ../../../src/command/CommandReader.php